[Ios] ios socket problem, seek help heroes! Urgent!

I installed http://no001.blog.51cto.com/1142339/555344 this document to write error after written:
onSocket: 0x4b1e0f0 connection error: Error Domain = AsyncSocketErrorDomain Code = 2 "Read operation timed out" UserInfo = 0x9201ab0 {NSLocalizedDescription = Read operation timed out}

I do not know how to solve
Seeking help heroes, urgent!